Lasting machine



Aug. 27, 1940.

W.y S. DALLAS LAST'ING MACHINE No S u i Q N H ww Nw .rm Q

Filed Aug. l2, 1959 /Agl/E/VTUQ MLV 6. ML

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Aug. 27, 1940. w. s. DALLAS LASTING MACHINE Filed Aug. l2, 1959 2 Sheets-Sheet 2 Patented Aug. 27, 1940 iuniileo STATES PATENT orrice LASTING MACHINE William S. Dallas, Beverly, Mass., assigner to United Shoe Machinery Corporation, Borough of Flemington, N. J.

Jersey `Application August 12,

193 Claims.

This invention relates to lasting machines and is herein illustrated as embodied in a machine particularly adapted to the lasting of prewelt` Ashoes. 1

In lasting prewelt shoes in a machine of the type herein illustrated, the margin of an upper with a welt attached is wiped inwardly over'the bottom of a last, or an insole thereon, to an exm, tent `determined ordinarily by the distance `be- 1o' tween the edge of the last bottom and the edge face of a llenwhich in some cases is temporarily attached to the last bottom'and in other cases is secured to an insole attached to the last bottom. Prewelt lasting machines of the type here- 15 in illustrated are provided with lasting wipers, the wiping edges of which conform to the shape of the periphery of that portion of the upper on which they operate. The wipers in their operation should advance uniformly over the margin of the last bottom to last the upper to the same extent about its entire periphery; In lasting machines heretofore employed a uniform lastingof the welted margin of 'the upper dependsupon accurate location of the llast relatively to the lasting wipers, since the range of movement of the wipers is fixed and unchangeable. It is difficult in a `machine of this type to locate the last accurately relatively to the lasting wipers,l since there are no gages other than the wipers themselves to guide the operator. Consequently, in the commercial manufactureoi prewelt shoes, the

lasting of the uppers has not been as accurate as desired. i Y

It is an object of the present invention to provide a lasting wiper organization in a prewelt lasting machine which permits Ythe wipers to accommodatethemselves to the position of the last in the machine and enables the operator to wipe the wel-ted margin inwardly to a uniform extent' over the margin of the last bottom even Ythough the last is not located exactly4 in the c enter of the 4space between the wipers.

The lasting machine organizationherein illustrated includes a pair of wipers constructed and' arranged to operate on one end portion of a prewelt upper. In order to obtain a high degree of accuracy in the lasting operation, it is desirable that the wipers be located by engagement-with an end portion of the shoe before their 'closing` action commences, since the position of the shoe in `the machine lengthwise thereof may vary slightly; Accordingly, it is a `further object of the; invention to provide a lasting organization in which the wipers are located relatively to a a corporation of New 1939, Serial No. 289,891

end of the shoe and are located thereby foi1 clos-l ,11,

ing movement on the shoe.l The illustrated wipers first advance lengthwise of the` shoe while held wide open until the adjacent end portions of their wiping edges enter the welt crease at one end of the upper and wipe that end portion of the upper over the margin of the last bottom and against the edge face of aller. AThe resistance of the upper to further advancement of the wi-l pers lengthwise of the shoe arrests their lengthwise movement, and thereuponthe wipers close upon the upper to last the side portionsv thereof, swinging about a common center located at the adjacent 'ends of their wiping edges.

trated machine is provided with a plate having wiper-guiding members, which plate moves with the wipers during their movement lengthwise of the shoe and is arrested when the lengthwise movementr of the' wipers is arrested, whereuponv the wiper actuator advances relatively to the wiper-guiding plate and closes the wipers on the up- Iper.

`In the operation of the wipers, if the last is not located exactly in the center of the space between the wipers, and therefore one wiper com-` pletes its closing `mover-nenti,with the closing movement of the other wiper not completed,the

illustrated wiper-operating mechanism operates the latter wiper independently of the former and completes its closing movement; v

These and other features of the invention willi, nowbe described with reference to the accompanying drawings and pointed out in the appended claims.

In the drawings,

Fig. l is a plan View of the heelend of a bed lasting machine embodying the features lof the present invention, certain pa-rrts being broken away to illustrate underlying-parts some of which are shown in section;

Y For guiding the closing movement of the wipers, the illusv Fig. 2 is a sectional elevation on the line II-II of Fig. 1;

Fig. 3 is a section on the line III-III of'Fig. 1;

Fig. 4 is a plan View of the heel lasting wipers and their operating mechanism, certain parts being broken away to illustrate underlying parts some of which are shown in section; and

Fig. 5 is a section on the line V-V of Fig. 4.

Referring to Fig. 1, the illustrated machine is provided with a heel head l@ which in its general organization is similar to constructions found f in Well-known types of bed lasting machines such, for example, as that shown in United States Letters Patent, No. 1,018,477, granted February 27, 1912, on an application of Matthias Brock. The heel head il! includes a lcylindrical portion i2 which is mounted in bearing brackets lll for turning movement about an axis extending longitudinally of a shoe in the machine. The heel head ill carries the heel lasting wiper organization which in the construction herein shown comprises a pair of lasting wipers i6 the wiping edges of which conform to the shape of the periphery ofthe .rear part of a shoe, carriers i8 A (Fig. 4) to which the wipers are secured by screws 223, and a plate 22 (Fig. l) which carries wiper guiding rolls hereinafter identied and which' has a longi- Y tudinal tongue 2d lwhich fits into a groove in a heel end of a shoe 'in the machine.

cover plate Z6 and directs the movement of Athe plate 22inarectilinear path toward and from the The illustrated wipers have thin beveled wiping edges which facilitate their entrance into the welt crease of a prewelt upper.

The illustrated lasting wipers in the course of U their operation rst move forwardly. toward the heel end of a shoe in the machine, While they are held in their open position,until 'the adjacent end portions of the wiping edges of the Wipers engage and overwipe the back seam portion ofthe upper.` Upon the completion of the ba'ck seam lasting the forward movement ofthe wipers is arrested by the shoe itself and the wipers close upon the shoe to' last the opposite sides of the heell and shank portions.V For `guiding the closing movement of the wipers the plate -22 has downwardly extending studs 28 (Fig. 1) on which are j pivoted rolls 30 (Fig. 4), said `rolls beingrarranged pin 56 the crosshead of which is positioned inthev in arcuate slots 32 provided'in the Wiper carriers I8 and being supported upon the base ofthe -heel head. The slots 32 are concentric' with "each other; their common center being located at the adjacent ends of the wiping edges'of the wipers I6. For operating the Wipers the illustrated organization is provided Witha hand lever 3B which is fulcrumed at 38 on a swinging arm 39 and is pivoted at 4U to a blockl2 swiveled on ajsha-ft 44. Referring to'Fig. 2,'the`left end of the shaft 44 is provided with a head 46 which isggrooved transversely to receive the'central portionvof acrossbar 38, the crossbar being pivoted to the head 46 by a pin 5@ having a flathead which is conned in a groove-52 in the bottom of the plate 22 for a purpose hereinafter described. The

crossbar 48 is connected to the, wiper carriers lI8 by links 54 (Fig. 4). The crossbar'A is normally held at right angles tothe shaft by a T-shaped groove in the head Il@ of the shaft 44 and the stem of which is slidably mounted in a lengthwise bore 58 provided in the shaft and communicating with said groove. pressed against the crossbar 48 by ka spring 69 in said bore, thus yieldingly maintainingV the .normal position of the crossbar. Y Whenthe hand The crosshead of said pin isY with that wiper-link 54's which has completed its operation, and imparts an independent closing movement to the other Wiper. Thus, it will beseen'that any inaccuracies in the construction of the upper or in the spacing of opposite sides of the shank portion of the'upper relatively to the wipers will not prevent a complete lasting of both sides of the shoe by the illustrated wipers. During the forward movement of the Wipers, prior to their closing action, ythe wipers are held open as illustrated in Fig. 1 by the action of a spring 62 mounted in a longitudinal bore B4 in the cylindrical portion l2 of the heel head lll. One end of thespring acts against a plunger t8 in the bore 615, the plunger abutting against the plate 22. The opposite end of the spring acts against a collar 65 secured to the shaft 44. The spring holds the plate 22 in its position relatively to the wipers i6 and the shaft A illustrated in Figs.y l and 2, this position being determined by the engagement of the iiat head of the pin 5D with the plate at the right end of the groove 52 in the plate. With the parts in this relation, the shaft lill which carries the wiper-operating crossbar 48 is at the limit of its retractive movement and the wipers are wide open. During the first stage of the advancement of the wipers, the plate 22, together with the wipers H5 and'their operating mechanismyadvanceas a unit, their relative positions being maintained by the springtion of the upper and their forward movement is arrested, further movement of the shaft 44 advances the crossbar 48 relatively to the plate 22 and `closes the wipers', the spring 62 being compressed to accommodate such movement of the shaft. i

For preventing excessive bodily movement of the wiper assembly when there is no shoe in the machine a pin 7l) (Fig. 2) extends downwardly from the cover plate 26 into a short groove 72 in the plate 22. AThisgroove 72 is of such a length that it accommodates the forward movement of the Wiper assembly required'for the lasting operation but it prevents the heel Wipers from striking the toe lasting wipers when the heel'wipers are operated without a shoein the machine.

In the course of the operation of the wipers I6 a considerable force in the direction of the width of the shoe must be imparted to the wipers in order to last the shank portions of the shoe. It

is, of course, undesirable for this pressure to be taken by the-rolls 3G as this would cause excessive wear and a hard wiper action. Accordingly, the carriage IG is provided with screws 1 4 (Figs. 4 and 5) which yact against angular blocks 75 which provide abutments for the arcuate edge faces 16 of the wiper carriers i8. The edge faces 76 are concentric with the slots 32 in the Wiper carriers and the blocks 'i5 are so arranged that.

ently adjusted by advancing the screws 14, lock nuts 'I8 being provided to secure the screws in adjusted position. y

'I'he heel portion of the upper is shaped about its last by a heel'band 8@ (Fig. `2l) of well-known4 construction. For adjusting` the heel band lengthwise of the shoe relatively to the wipers l the machine is provided with a mechanism similar to that illustrated and describedr in United States Letters Patent No. 1,188,617, granted June 27, 1916, on an application of Matthias Brock.

Referring to Fig. 2, the illustrated heel band adjusting mechanismV comprises a screw-ended shaft 82 mounted in a bore Vin the cylindrical portion l2 of the head and held against longitudinal movement b-y a plate 86 secured tothe head. The threaded end` 84 of the shaft 82 operates in a lug 83 extending downwardly .frorna slide Si@ which carries the'heel band supporting mechanism. i f

In lasting prewelt shoes in the illustrated machine a prewelt upper *which` has been positioned on itsilast and pulled over (for example, by means of a machine such as that illustrated and described in United States Letters Patent No.

2,081,228, granted May 25, 1937, on an application of Karl Engel) is mounted on the jack (not shown) and the welt is arranged to overlie the margin of the lasting wipers i6. T'he jack is then operated to force the shoe rearwardly into the heel band, whereupon the hand lever 36 is operated to advance the vlasting wipers. The wipers move forward wide open for a short distance, probably not more than 1A, until the adjacent ends of their wiping margins have lasted the back seam portion of the upper. The wipers then close on the upper without further forward movement. In the event that one of the wipers comes to the limit of its closing movement before the wiper at the other side of the upper has completed its lasting operation the latter .wiper closes independently as hereinbefore described to complete the lasting operation.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. In a lasting machine, a pair of end lasting wipers the wiping edges of which conform to the shape of the periphery of an end portion of a shoe, means for moving the wipers forwardly lengthwise of a shoe supported in the machine, and mechanism through which said means operates to close the wipers upon the shoe after/the forward movement of the wipers has been arrested by the shoe, said mechanism being constructed to effect independent closing movement of either wiper after the closing movement of the other wiper has been arrested by the shoe.

2. In a lasting machine, a pair of end lasting wipers the wiping edges of which conform to the shape of the periphery of an 4end portion of a.

shoe, means for moving the wipers forwardly lengthwise of a shoe supported in the machine, and mechanism through which said means operates to close the wipers uponthe shoe after the forward movement of the wipers has been arrested by the shoe, said mechanism including a wiper-guiding member for directing the `closing movement of the wipers which member moves lwith the wipers during their forward movement j lengthwise of the shoe.

3. In a lasting machine, a pair of end lasting wipers the wiping edges of which conform to the shape `of the periphery of an end portion of a shoe, means for moving the wipers forwardly lengthwise of a shoe supported in the machine, and mechanismthrough which said means operates to close the wipers upon the shoe after the forward movement of the wipers has been arrested by the shoe,l said mechanism including a wiper-guiding member for directing the closing movement of the wipers which member moves with the .wipers during their forward movement lengthwise of the shoe, and said mechanism being constructed toA effect independent closing movement of either wiper after the closing movement of the other wiper has been arrested by the shoe.

4. In a lasting machine,a pair of end lasting wipers the wiping edges of which conform to the shape of the periphery of an end portion of Aa shoe, means for moving the wipers forwardly is y lengthwise of ay shoe supported in the machine,

and mechanism through which said means operates to close the wipers upon the shoe, said mechanism being rendered operative by resistance of the shoe to the forward movement of the wipers.

5. In a lasting machine, a pair of end lasting wipers the wiping edges of whichconform to the sha-pe of the periphery of an. end portion of a shoe, an actuator, mechanism through which said actuator operates to close the wipers upon the shoe comprising a wiper guiding plate and connections from the actuator to the wipers, said plate and said connections being constructed. and arranged to move Vforwardly lengthwise of the shoe with the wipers until the shoe itself` resists further forward movement of the wipers and causes the wiper-operating mechanism to close v the wipers on the shoe.

6 In a lasting machine, -a pair of vend lasting wipers the `wiping edges of which conform to the shape of the periphery of an end portion of a shoe, means for moving the wipers forwardly lengthwise of a shoe supported in the machine, and mechanism through which said means operates to close the wipers upon the shoe after the forward movement of the wipers has .been

connections with the wipers through which plate the actuator operates to close the wipers upon the shoe after their forward movement has been arrested by the shoe.

8. In a lasting machine, a pair of end lasting wipers the wiping edges of which conform to the shape of the periphery of .an end portion of `a shoe, anactuator for moving the wipers forwardly lengthwise of a shoe supported in the machine, a

wiper-guiding plate having roll and slot connecv tions with the wipers through which plate the actuator operates to close the wipers upon the shoe after their forward movement has been arrested by the shoe, and operating connections from the actuator to the wipers constructed and arranged `to permit closing movement Yof either wiper after the closing movement of the other wiper has been arrested by the shoe. n 9. In a lasting machine, a pair of end lasting wipers the wiping edges of which conform to the shape of the periphery of an end portion of a shoe, said wipers being constructed and arranged for forward movement .lengthwise of the shoe lin their open position and for closing movement about a common center located at the adjacent ends of their wiping edges after their forward movement ,has been arrested by the shoe, and a wiper-guiding plate for directing the closing movement of the wipers, said plate being mounted for forward movementwith the wipers.

10. In a lastingmachine, a pair of end lasting wipers the wiping edges of which conform to the shape of the periphery of an end portion of a shoe, an actuator foradvancing and closing the wipers, a movable plate having roll and slot connections With the wipers for ydirecting their closing movement, and yielding means ior'holding the plate and the wipers in a predetermined relation to each other and to the actuator as the wipers advancesuch that the wipers are held in an open position until they engage one end of a shoe in the machine. t

11. In a lasting machine, a pair of lasting Wipers the wiping edges of which conform to the shape of the periphery of the heel and shank portions of a shoe and the wiping edges of which are constructed to operate in the Welt crease of a prewelt upper, means for moving the Wipers forwardly lengthwise of a shoe supported in the machine, and mechanism through which said means operates to close the wipers upon the shoe, said mechanism being rendered operative by resistance of the shoe to the forward movement of the wipers.

12. In a lasting machine, a pair of end lasting Wipers the wiping edges of `which conform to the shape of the periphery of the end portion of a shoe, a slide for advancing and closing the wipers, a movable plate having a roll and slot connections with the wipers for directing their closing movement, and a spring arranged to operate in opposite directions on the plate and the shaft for holding them at the limit of their relative movement in one direction, the wipers being in their open position when the shaft and plateiare at said limit of their relative movement.

13. In a lasting machine, a `pair of end lasting wipers, an' actuator for moving the Wipers forwardly lengthwise of a shoe in the machine and closing the wipers, connections from the actuator to the Wipers comprising a slide, a crossbar pivoted on theslide and yieldingly held in a predetermined angular relation to the slide, members connecting the crossbar to the wipers, and yielding means for holding the wipers in an open position during their forward movement, the closing of the wipers depending upon the resistance of the shoeitself to their forward movement.

WILLIAM s. DALLAS. d 

